Setting for precious stones.



APPLICATION FlL-ED OCT-1|, I91?- Patented Jan. 8, 1918.

ABRAHAM SUDERGV, OF NEXV YORK, N. Y..

SETTING FOR PRECIOUS STONES.

essence.

Specification of Letters Patent.

Patented Jan. 8, 1918.

Application filed October 11, 1917. Serial No. 195,921.

I To all whom it may concern:

Be it known that I, AB AHAM Sunnnov, a citizen of the United States ofAmerica, residing at New York, N. Y., have invented a new and usefulSetting for Precious Stones, of which the following is a specification.

This invention relates to the setting of precious stones or jewels andthe objects of the invention are to provide a cluster setting of suchconstruction as to give the appearance of a single large out stone.

A special object is to construct the setting in such a way as to obscurethe lines of separation between the several stones and thus enhance theefiect of a single stone.

In the accomplishment of the foregoing I mount the individual stones ina supporting base or head with a number of the small stones groupedabout a central stone which is supported above the plane of thesurrounding stones and with its edges substantially or approximatelyoverlying the edges of the surrounding'stones, said central stone beingsupported on bits or prongs rising from the central portion of the head.

Other features and details of the invention will be understood as thespecification proceeds.

In the accompanying drawing 1 have illustrated the invention embodied ina practical form but it will be understood that changes andmodifications may be made without departing from the true spirit andscope of the invention.

In said drawing Figure 1, is a plan view of the setting mounted in afinger ring.

Fig. 2, is a side elevation thereof.

Fig. 3, is asectional view taken substantially on the plane of the line3-8 of Fig. 1.

Fig. 4, is a detail view of the blank from which. the back of thesetting is made.

Fig. 5 is a top View of the head of the setting before the stones areapplied.

Fig. 6 is a bottom plan view of the under frame or bodyof the setting.

Fig. 7 is; a sectional View of dies for strikin up the crown or head ofthe setting.

The ody of the setting comprises a base or head member 7 which may becrowned as indicated in the drawing and to which is attached the backmember 8. This back member is pyramidal in shape and is made from astarhaped blank like that shown at 9 in Fig. 4:, the radiating arms ofthis blank being longitudinally slotted as indicated at 10 and thecenter of the blank being perforatcd as at 11. When the blank is bent upinto pyramidal form it is secured to the r1 of the head piece bysoldering or in any other suitable way. When thus ussembled theseslotted arms of the back piece give the effect of the rear facets of asingle cut stone the size of the complete setting, as indicated in Fig.2.

The crown or head is made with a series of ewel seats 12 grouped about acentral jewel seat 13. These seats may be provided by simply punchingopenings in the crown of a proper size to receive the stones. 14Ldesignates the central crown stone and 15 the side stones groupedthereabout. This central stone as shown, in Figs. 1, 2 and 3, is locatedabove the plane of the side stones and with its edges approximately orsubstantially overlying the adjacent edges of the side stones. ,Thecentral stone thus in eifect hides or obscures the joints between theseveral stones so that when viewed from above the setting very closelyresembles a single large cut stone, the central stone giving the effectof the table and the side stones appearing as the side facets of asingle cut stone. I

To support the crown stone in this upraised position I provide theupstanding bits or prongs 16 disposed about the centra jewel seat 13 andupstanding from the face of the crown a suificient distance to hold thecentral stone at the proper elevation. In practice these so-called bitsare disposed at the periphery of the central jewel seat and at points inbetween the adjoining side jewel seats 12. This di position of theupstanding prongs in the triangular spaces formed at the junction of twoadjoining side jewels with the central crown jewel conceals the prongsto such an extent as to render them unnoticeable when viewed from aboveand this efiect is further heightened by making the prongs of platinumor similar metal. In practice it is preferred to make the entlre headand back of platinum polished to refleet and give off the light of thediamonds or other stones employed.

Prongs'17 may be also provided at or formed up from the rim of the head7, as shown in Figs. 1 and 2, to assist 1n holding the side stones intheir seats these prongs stones and said side stones are rim of thesetting at points in between the jewel holdlng prongs 17 on the rim ofthe crown. This securely holds the setting agalnst any lateral or rotarymovement in the supporting prongs.

In Figs. 5 and 6 the bare frame or body of the setting is illustrated.The first of these views shows how the bits for the central stone may bestruck up from the mate rial of the crown and Fig. 6 shows how the armsof the pyramidal back member sub stantially come to a point and how the7 spaces between these arms may be scoredvor .grooved as at 19toemphaslze the separation of these arms.

1 Fig. 7 illustrates how the crown may be formed between upper and lowerdies 20 and 21, the lower die being formed with protrusions 22 and 23 toform the central and surrounding jewel seats respectively and withrecesses 24 around the central protrusion into which the metal is forcedby the upper die to form the upstanding set of prongs 1'6.

I claim .1. A cluster setting comprising, a base having a central seatfor a stone and a plurality of seats grouped about said central seat,stones engaged in said latter seats and a stone engaged in the centralseat with its adjacent edges substantially overlying the edges of thesurrounding stones to thereby effect the appearance of a continuousstone.

2. A cluster setting comprising, a base having a central passage andsurrounding passages grouped aboutsaid central passage, 4 upstandingprongs, disposed about the central passage, a stone supported by saidprongs above the general plane of the base and stones seated in thesurrounding passages, and with its edges overlying the adjacent edges ofthe side stones to thereby simulate the appearance of the top ofacontinuous stone.

3. A. cluster setting comprising, a; base having a central passage andsurrounding 5 passages disposed about said central passage, prongs onthe rim portion of said head at the edges of said latter passages,stones seated in said passages'and held by said prongs, said prongsoccupyingthe, spaces between adjacent stones, upstanding prongs on thehead about the central passage and a stone supported by said upstandingprongs I with its edges substantially overlying the adjacent edges ofthe surrounding stones.

- a. A cluster setting comprising, a head having a central passage andsurrounding passages disposed about said central passage, prongs on therim portion of said head at the edges of said latter passages, stones 7seated in said passages and held by said prongs, upstanding prongs onthe head about the central passage,-a stone supported by said upstandingprongs with its edges overlying the adjacent edges of the surroundingstones and supporting prongs engaging the rim portion of ,the basebetween the prongs at the outer edge thereof.

ABRAHAM SUDEROV,

